Use place value to explain removing the zero in the ones from a multiple of ten when we divide by 10
I can use place value to explain removing the zero in the ones from a multiple of ten when we divide by 10
- Year 4
Use place value to explain removing the zero in the ones from a multiple of ten when we divide by 10
I can use place value to explain removing the zero in the ones from a multiple of ten when we divide by 10
Lesson details
Key learning points
- Dividing by ten moves all the digits one column to the right making them one tenth times the size.
- If you divide a multiple of 10 by ten, the numbers move one place to the right and the zero in the ones disappears.
- The zero only disappears if you are dividing a multiple of 10 by ten.
Keywords
Placeholder - A placeholder is where we use the digit zero to hold a place in a number and maintain place value.
Magnitude - The magnitude of a number is its distance from zero.
Common misconception
Many pupils believe that 'subtracting zero' is dividing by 10 which can lead to difficulties later on when they are introduced to decimal numbers.
Don't dismiss it. It's a pattern that has been spotted and generalised. Do encourage the children to work with physical resources that don't involve the numbers themselves so they can see that it's not subtracting zero but changing place value.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the missing factor in the following equation? × 10 = 540
Q2.What is the missing factor in the following equation? × 10 = 630
Q3.Match the numbers with those that are ten times their size.
Q4.Match the numbers to the numbers that are one tenth times the size.
Q5.What is the missing number in the following equation?
11 = ÷ 10
Q6.What is the missing number in the following equation?
14 = ÷ 10
Assessment exit quiz
6 Questions
Q1.What happens to the value of digits as they move right, down the place value columns as shown in the image.
Q2.What equation is being represented by the place value counters shown here?
Q3.What equation is being represented by the place value counters shown here?
Q4.What is the missing number in the following equation?
91 = ÷ 10
Q5.What is the equation being represented in the place value chart showing before and after?
